The Teifi and the Dyfi - the two great rivers that form Ceredigion's natural boundaries to the south and the north- have wide estuaries and are natural havens for wildlife.
The whole length of the Teifi river and its tributaries have been designated as a Special Area of Conservation. The Teifi marshes on the river's estuary are a Site of Special Scientific Interest (SSSI) and has one of the largest expanses of common reed which can be easily explored along a boardwalk. The nature reserve is managed by the Wildlife Trust of South and West Wales, and has a purpose built centre where you can learn more about the reserve and its population of kingfisher, herons, otters and even a herd of water buffalo, which are used to keep pools free of vegetation so that amphibians and insects can also thrive.
The largest area of saltmarsh in Ceredigion lies along the Dyfi estuary at Ynyslas and Ynyshir. 'Ynys' means 'island', here coupled with the words 'glas' meaning green or fertile, and 'hir' meaning long. The names clearly indicate that some of the land is often covered by water - both salty and fresh.
The saltmarshes are awash with sea pink in spring, whilst marsh samphire and sea aster can also be seen in summer. The wet grasslands are a great place for spotting lapwings, redshank and other waders. The RSPB reserve at Ynyshir is host to migrant flocks of Manx Shearwaters in late summer, and in winter, Greenland white fronted geese - the only site in England and Wales they visit. There are trails and a boardwalk across the reserve leading to seven hides. Nearby is the Dyfi Osprey project, where you can watch these magnificent ' sea-eagles' through a webcam.